lunarkbot Start sends the domain of each tile (for a few well-known services, the product name) to its own server, api.start.lunarkbot.dev, to fetch the tile's icon. If you turn synchronization on, your tiles, folders and profiles are stored on that server under a hash of a random key generated on your device; addresses and names are encrypted on your device first. Records unused for 90 days are deleted automatically, and "Delete my synced data" in Settings removes yours at once. No account, no analytics, no tracking. Background images, your own tile icons and backup files never leave your device.

The full privacy policy, always in its current version: https://lunarkbot.dev/en/products/start/privacy/